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HP Kayak XA Supplementary Manual Page 8

Hp kayak xa: supplementary guide.
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Windows 2000 White Paper
or removal of a device is an example of such a dynamic event, as is the ability
to awaken a device or put it to sleep. Plug and Play and power management
both use WDM-based functions and have similar methods for responding to
dynamic events.
Registration for device notification events. Plug and Play enables user-
mode code to register for and be notified of certain Plug and Play events. The
RegisterDeviceNotification routine allows callers to filter exactly the class or
device for which they want to receive notification. This can be specific, such as
a file system handle, or general, such as a class of devices. Legacy
Windows NT notification methods continue to work as before.
The extent to which a device supports Plug and Play depends on the Plug and Play
support in both the device hardware and the driver(s) for the device (see Table 1).
Plug and Play device
Non-Plug and Play device
As this table indicates, any device that supports Plug and Play should have Plug
and Play support in its driver. The following list expands on the possible
configurations:
Plug and Play device and driver—full Plug and Play support. To provide
the optimal Plug and Play support, the hardware implementation must comply
with the OnNow design initiative, including ACPI. Windows 2000 Plug and Play
targets ACPI systems only.
Plug and Play device/non-Plug and Play driver—no Plug and Play
support. If a driver does not support Plug and Play, its device behaves as a
non-Plug and Play device, regardless of support in the hardware. A non-Plug
and Play device can constrain the Plug and Play capabilities of the entire
system.
Non-Plug and Play device/Plug and Play driver—possible partial Plug and
Play support. A non-Plug and Play device can have partial Plug and Play
support. Although it is not possible for the system to automatically and
dynamically recognize the hardware and load the appropriate drivers, it is
possible to have Plug and Play manage resource allocation, provide an
interface for driver interaction with the Plug and Play system, interact with
power management, and register device notification events. Also, if a non-Plug
and Play device has a Plug and Play driver, the device appears in the Device
Manager application, and property pages are available for that device.
Non-Plug and Play device/non-Plug and Play driver: no Plug and Play
support.
4
Plug and Play driver
Full Plug and Play
Possible partial Plug and Play
Non-Plug and Play driver
No Plug and Play
No Plug and Play

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